How Many People Are Named Moira Kelly?
There are approximately 6 people named Moira Kelly living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 57,125,723 Americans.
This estimate combines SSA birth records for the first name Moira with Census Bureau frequency data for the surname Kelly. Below you will find a breakdown of both names, including popularity trends, gender data, and Census background data where it is available.
Estimated People with This Name
6
1 in 57,125,723 Americans
Combination Rarity
Very Rare
First Name
View full profileMoira
Last Name
View full profileKelly
Moira: Popularity Over Time
Year-by-year SSA birth registrations for the first name Moira. The peak year was 1963 with 144 births. The average person named Moira today is 36 years old.
Ancestry of the First Name Moira
In the 2020 Census, the first name Moira was most commonly recorded among people who identified as White (84.93%). The next largest recorded groups were Hispanic (5.72%) and Two or More Races (4.19%).
These percentages describe the people who had the first name Moira in the 2020 Census. They do not tell you the deeper origin or meaning of the name itself.
Read this as a snapshot of who already had the name in 2020, not as a trend line. The SSA chart above is still the better way to see how Moira rose or fell over time.
Ancestry of the Kelly Surname
The surname Kelly was most commonly recorded among people who identified as White in the 2020 Census.
This is a self-reported race and ethnicity breakdown for people who had the surname Kelly in the published Census surname tables. It gives useful context around who was recorded with the name, but it does not tell the full family history of every Boone line.
How we calculated this
The first name "Moira" has an estimated frequency of < 0.0001% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "Kelly" appears at a rate of 85.49 per 100,000 people in the 2020 U.S. Census.
We do not use the Census first-name snapshot for the main estimate because it is only published once every 10 years. The latest public first-name Census file is from 2020, which is already 6 years old. SSA birth records plus CDC survival data give a better current estimate of how many people with the first name Moira are likely to be alive now.
Multiplying these frequencies against the U.S. population of ~343 million gives 6 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Moira
Other people with the surname Kelly
Moira Kelly: Questions and Answers
How many people are named Moira Kelly?
We estimate approximately 6 people named Moira Kelly are alive in the United States today. The first name Moira is shared by 6,869 Americans, and the surname Kelly is shared by 293,007.
How rare is the name Moira Kelly?
This name combination is classified as Very Rare, occurring at a rate of about 1 in 57,125,723 Americans. The first name Moira is rare and the surname Kelly is common.
Is Moira a male or female name?
Moira is predominantly female, with 0.0% of bearers being male and 100.0% female. It peaked in popularity in 1963 and the average bearer today is 36 years old.
What does the Census say about the first name Moira?
In the 2020 Census, the first name Moira was most commonly recorded among people who identified as White (84.93%). The next largest recorded groups were Hispanic (5.72%) and Two or More Races (4.19%). These percentages describe the people who had the name in the 2020 Census, not the deeper origin of the name itself.
Where does this data come from?
First name data comes from the Social Security Administration (1880 to 2024), adjusted for survival using CDC 2023 life tables. When available, first-name Census background data comes from the 2020 U.S. Census Bureau first-name tables. Surname data comes from the 2020 U.S. Census Bureau. Full methodology.
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